You are able to do this Shabar mantra chanting for eleven, 21, 31, or forty one times, the position and time of mantra chanting should be the same for the volume of times you wish to do sadhana. You can use Rudraksha or Tulsi rosary to chant the mantra. https://vashikaran08643.timeblog.net/68221266/details-fiction-and-most-powerful-sarv-karya-sidh-shabar-mantra-karya-siddhi-shabar-mantra-most-powerful-shabar-mantra